National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

A Few Clouds

97°F

36°C

Humidity 43%
Wind Speed S 10 G 24 mph
Barometer 29.99 in (1014.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 3 Jul 4:56 pm CDT
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Independence Day

    Independence Day: Mostly sunny, with a high near 96. Heat index values as high as 101. South southwest wind around 5 mph.

    High: 96 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 101. South southwest wind around 5 mph.

    High: 96 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 96. South wind around 5 mph.

    High: 96 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 97. South southwest wind around 5 mph.

    High: 97 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. South wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Independence Day
Mostly sunny, with a high near 96. Heat index values as high as 101. South southwest wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 101. South southwest wind around 5 mph.
Sunday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 96. South wind around 5 mph.
Monday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 97. South southwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 76. South wind 5 to 10 mph.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Mostly sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 77.
Friday
Mostly sunny, with a high near 97.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
2:46 pm CDT Jul 3, 2026
Forecast Valid:
5pm CDT Jul 3, 2026-6pm CDT Jul 10, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation